sql上机练习3

USE MySchool

--查询学生姓名、所属年级名称及联系电话。
SELECT S.StudentName AS 姓名,G.GradeName AS 年级,S.Phone AS 电话
FROM Student AS S
INNER JOIN Grade AS G ON S.GradeId=G.GradeId

SELECT S.StudentName AS 姓名,G.GradeName AS 年级,S.Phone AS 电话
FROM Student AS S,Grade AS G WHERE S.GradeId=G.GradeId

--查询年级编号为1的科目名称、年级名称及学时。
SELECT J.SubjectName AS 科目名称,G.GradeName AS 年级,J.ClassHour AS 学时
FROM Subject AS J
INNER JOIN Grade AS G ON J.GradeId=G.GradeId
WHERE G.GradeId=1

SELECT J.SubjectName AS 科目名称,G.GradeName AS 年级,J.ClassHour AS 学时
FROM Subject AS J,Grade AS G
WHERE J.GradeId=G.GradeId AND G.GradeId=1

--查询参加科目编号为1的考试的学生姓名、分数、考试日期。
SELECT S.StudentName AS 姓名,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R
INNER JOIN Student AS S ON R.StudentNo=S. StudentNo
WHERE R.SubjectId=1

SELECT S.StudentName AS 姓名,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R,Student AS S
WHERE R.StudentNo=S. StudentNo AND R.SubjectId=1

--查询学号为S1101007的学生参加的考试科目名称、分数、考试日期。
SELECT J.SubjectName AS 科目名称,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R
INNER JOIN Subject AS J ON R.SubjectId=J.SubjectId
WHERE R.StudentNo='S1101007'

SELECT J.SubjectName AS 科目名称,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R ,Subject AS J
WHERE R.SubjectId=J.SubjectId AND R.StudentNo='S1101007'

--查询参加考试的学生学号、所考科目名称、分数、考试日期.

SELECT R.StudentNo AS 学生学号,J.SubjectName AS 科目名称,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R
INNER JOIN Subject AS J ON R.SubjectId=J.SubjectId

SELECT R.StudentNo AS 学生学号,J.SubjectName AS 科目名称,R.StudentResult AS 分数,R.ExamDate AS 考试日期
FROM Result AS R,Subject AS J
WHERE R.SubjectId=J.SubjectId